Function getSource

packages/compiler-sfc/src/style/preprocessors.ts:141–151

(
  source: string,
  filename: string,
  additionalData?: string | ((source: string, filename: string) => string),
)

}

function getSource(
  source: string,
  filename: string,
  additionalData?: string | ((source: string, filename: string) => string),
) {
  if (!additionalData) return source
  if (isFunction(additionalData)) {
    return additionalData(source, filename)
  }
  return additionalData + source
}

export type PreprocessLang = 'less' | 'sass' | 'scss' | 'styl' | 'stylus'